Support block



FIG. 1 illustrates a perspective view of a support block in accordance with the present invention;

FIG. 2 illustrates a front elevation view thereof;

FIG. 3 illustrates a rear elevation view thereof;

FIG. 4 illustrates a left side elevation view thereof;

FIG. 5 illustrates a right side elevation view thereof;

FIG. 6 illustrates a top plan view thereof; and,

FIG. 7 illustrates a bottom plan view thereof.

Broken lines in the drawings form no part of the claimed design. 

CLAIM The ornamental design of a support block, as substantially shown and described. 